(the term applies to premature, full term, and postmature infants).

Infants born prior to 37 weeks of gestation are called "premature", those born between 39 and 40 weeks are "full term", those born through 41 weeks are "late term", and anything beyond 42 weeks is considered "post term".

Before birth, the offspring is called a fetus. The term infant is typically applied to very young

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